Problem with latest Intel Graphics Driver

[Rstock]

Hi,

I am using a VT4900 dock. Since the installation of the latest intel graphics driver Intel-UHD-Graphics-Driver_WW8K2_WIN_27.20.100.9466_A04 for my Dell XPS Laptop the monitor attached to to the DP (at the HDMI port of the monitor) is not working properly. The picture is flickering sometimes but remains dark otherwise. The whole system responds in general a bit laggy when the display is attached to the port. I have a two monitor configuration (two Asus VC239). I switched both monitors - same results. The monitor attached to the HDMI port at the dock is always working properly. I have attached several different cable / cable adapter combination. DP to HDMI cable, passive DP to HDMI adapter + HDMI cable, active DP to HDMI adapter + HDMI cable. Only downgrading to the A03 driver version of the intel driver and unplugging the dock for 10s helped to get the monitor working again.

Does anybody else have this problem? Is this an indication of a defective VT4900 dock?

Thanks!